Pump



Jan. 2, 1945. A M. HAMR l2,366,397

A. M. HAMER Jan. 2, 1945.

PUMP

' 2 sheets-sheer 2 Filed Oct. 19, 1943 f Patented Jan. V2, 1945 UNITED STATES. ril-TENT OFFICE August M. Hamer, Liberty, Tex.

Application October 19, 1943; Serial No. 506,908

This invention relates to a pump.

An object of the invention is to provide a pump of the character described specially designed for use in deep wells such as oil weils.

Another object of the invention'is to provide a pump of thecharacter described operable upon intake, or up, stroke by the pressure of an operating liquid and upon downstroke by the weight of the column of liquid being pumped from'the well. Y

A further object of the invention isy to provide a pump of the character described havingy a pumping cylinder and a pumping plunger therein with means for applying the pressureof an operating liquid to the plunger to eiect an upward, or intake, stroke to the plunger whereby the pumped liquid will be drawn in to the cylinder from the well with a valve, arranged to be opened at the end of the intakev stroke whereby the liquid drawn into the cylinder will bei forced out of the cylinder, upon down stroke of the plunger, and upwardly through the pump tubing to the ground surface.

A further object is to provide in a pump of the character described a novel valve construction,y

which will be automatically opened when the plunger reaches the limit of its upward movement to allow .the discharge of the liquid drawn4 into the cylinder upon the preceding upstroke of the plunger and which will be automatically closed when the plunger reaches the limit of its'downward movement; whereby. the pressure of theoperating liquid will be. applied to the plunger to effect the succeeding upward,yor intake, stroke.

By the use of the construction h'ereinatter described all pump operating sucker rods will be dispensed with.

With the above and other objects in view the invention has particular relation to certain novel features of construction, operation and arrangement of parts an example of which is given in this specication and illustrated in the accompanying drawings, wherein- Figures 1, 2 an 3 show vertical sectionalviews of the upperyintermediatev and lower sections, respectively, of the pump shown on down, r discharge, stroke.

Figures 4 and 5 show vertical sectionall views of upper and intermediate sections, respectively, of the pump showing thev plunger on up, or intake, stroke, and

Figure 6 shows a side elevation of the complete pump shown partly in section.

Referring now more particularly to the drawings wherein like numerals' of reference desigs claims. (o1. 10s-4c)y nate the same parts in each of the figures the `numeral I designates the well casing and the inlet openings 4' for the operating'liquid.

yupper end of the flow tube I9 by means of upper Connected= to the lower end of the pump cylinder there is' a coupling 5 having an inside .downwardly tapering seat 6 and connected to this coupling and 'extended rdown into the well there may be the usual well screen T who-se upper end is packed off from the casing by a conventional packer 8.

Within the pumping cylinder; there is a plunger having the upper and. lower plunger heads designated generally by the numerals 9 and l0 and which are connected by the tubular plunger body IIl having one or more inlets I2 forl the operating liquid. The upper and lower plunger heads are formed by the downwardly opening cup rings I3 and the upwardly opening cup rings I4 which are separated by the respective spacers I5 and' IIl suitably-secured, in assembledy relation, on the plunger body as shown. Y

Theplunger body I'I forms, in effect', a cylinder and fitted closely within the cylinder beneath the inlets l2 there -is a packing assembly formed of the upwardly opening cup rings I'l and the intervening spacers I8' which are secured on the Beneath the valve cage 23 there is a lower valve `cage 26 and said cages4 are connected by the tubularcoupling' 21'. The lower valve cage 26 has the tubular inlet valve seat 28 controlled by the upwardly opening ball valve 29 andv screwed into the lower end ofthe valve cage 26 there is a tubular anchor 3I'I which is. downwardly tapering externally and fitted into the seat 6. This anchor has a surrounding seal `3I forming a uid tight joint withsaid seat. v

Accordingly the ow tube I9, the packing assembly, on the upper end`r thereof, and thevalve assembly', at the lower end thereof, are anchored in place and the pumping plunger moves up and down relative thereto. y

Extending axially throughV the upper plunger head 9k there is a sleeve valve 32 whose lower end may be closed by the downwardly elongated plug 33. The valve is provided with a series of inlet ports 34 located near the lower end of the valve. A seal ring 35 is installed within the plunger body II at the lower end of the head 9 and through which the valve is tted. The valve has a surrounding expansible ring 36 seated in an annular groove 3'I therearound. This ring may seat in the upper or lower inside annular grooves 38 or 39 within the plunger body to hold the valve in its upper or lower position relative to the plunger. said lower position and as shown in Figure it is in its upper position.

When the valve is in its upper position operating liquid entering the cylinder II will force the pumping plunger upwardly butwhen `the valve is in its lower po-sition the pumped liquid may escape from the cylinder 3 up through the ilow tube I9 through the ports 34 on up through the valve 32 and the tubing 2 to the ground surface.

Operating liquid may be forced down through the well casing under constant pressure and will enter through the openings 4, as indicated by the arrows in Figure 2, between the upper and lower plunger heads 9 and I0. With the pumping plunger in its lower position, as indicated in Figures 4 and 5, this operating uid will enter through the ports I2 between the seal II beneath and the seal 35 above. The ports 34 will now be closed to the operating fluid and the pressure thereof conned between the seals, or cup rings, I1 beneath and the seal 35 above will operate to move the pumping plunger upwardly in the direction indicated by the arrows in Figures 4 and 5 thus drawing in a change of well liquid from the well beneath past the valve 29 and out throug the open cage 26 and into the lower end of the cylinder 3 beneath the plunger. The pressure of this operating liquid will hold the valve 25 closed. As the plunger approaches the limit of its upward movement the upper end of the valve 32 will contact against the cross rod 40 in the tubing above. This will stop the upward movement of the valve but pressure of the oper- ,Y ating liquid will continue the upward movement of the plunger and the expansible ring 36 will be contracted and unseated from the groove 38 and .as the plunger moves on upwardly the groove 39 cylinder beneath will be forced out of said cylinder passing in through the cage 26 and up past the valve 25 and on up through the flow tube I9, as indicated by the arrows in Figures 2 and 3; and will enter the cylindrical plunger bodyV Il and will pass on up around the valve 32 and. through the ports 34 thereof and on up through the tubing 2. As the plunger approaches 'the limit of its downward movement the lower end `of the valve plug 33 will contact against the upper end of the flow tube I9 and this will stopv the downward movement of the valve. The

plunger however will continue its downward movement and unseat the ring 36 from the l groove 39 and when the groove 38 registers with said ring the ring will expand and snap into said groove and meanwhile the'seal ring 35 will' have As shown in Figure 1 it is in.

moved downwardly beneath the valve ports 34, thus completing the cycle and thereupon the plunger will begin another up stroke, or intake stroke, to draw in an additional charge of liquid from the well; and to elevate the column of pumped fluid in the tubing 2 above.

It is to be understood that the pump will be located in the well beneath the level of the well liquid.

The column of operating liquid in the casing I, as well as the column of pumped liquid in the tubing 2, extend to the ground surface and approximately balance each other therefore a comparatively low pressure may be applied to the operating uid in order to over balance the column of pumped liquid so that high pressure equipment will not be required.

The drawings and description are illustrative merely while the broad principle of the invention will be dened in the appended claims.

What I claim is: l

1. A well pump comprising a discharge tubing, a cylinder carried thereby and having aside opening for operating liquid and having a valve controlled inlet opening, a tubular plunger in the cylinder having upper and lower seals with the cylinder above and beneath the side opening and having an inlet opening, a ow tube anchored in the cylinder and having an upwardly opening valve controlling the flow of the pumped liquid therethrough from the cylinder, a seal between the flow tube and plunger, a sleeve valve within and mounted to move with the plunger `and arranged to conduct liquid from said tube into the tubing` above, said valve having a seal therearound with vthe plunger and having a side opening and means for moving the valve tocarry the opening thereof above and beneath its seal as the plunger moves to lower and upper positions, respectively.

2. A well pump comprising a, discharge tubing, a cylinder carried thereby and having a side controlled inlet'. opening, a tubular plunger in the cylinder having upper and lower seals with the cylinder above and beneath the side opening and having inlet opening, a now tube anchored in the cylinder and having a seal with the plunger beneath said inletl opening and having an upwardly opening valve controlling the now of the pumped liquid therethrough from the cylinder, a sleeve valve within and mounted to move with the plunger and arranged to conduct liquid from said tube into the tubing above, said valve hav- Ving a seal therearound with the plunger and having a side opening and means for moving the valveto carry the opening thereof above and beneath its seal as the plunger moves to lower and upper positions, respectively.

3. A deep well pump comprising a tubing, a cylinder on the lower end of the tubing having an inlet port, a standing valve assembly controlling the inlet of well liquid into the cylinder, a now tube anchored in the cylinder, an upwardly opening valve controlling the flow of liquid upwardly from the cylinder, through said tube, aY tubular plunger body reciprocable over said ow tube, upper and lower plunger heads on the plunger body on opposite sidesof said port and forming seals with the cylinder, a seal on the flow tube with said plunger body, said body having an inlet port above thel flowV tube seal, a tubular sleeve v'alvearranged axially in, and in sealed relation with, the plunger assembly and having a side port and means to move the sleeve valve, 4as the plunger assembly reciprocates to carry the valve port above and beneath the valve seal whereby said sleeve valve will be closed and opened.

4. A deep well pump comprising a tubing, a cylinder on the lower end of the tubing having an inlet port, a standing'valve assembly controlling the inlet of well liquid from the Well beneath into the cylinder, a flow tube anchored in the cylinder, an upwardly opening valve controlling the flow of liquid upwardly through the ow tube, a plunger assembly in the cylinder including a tubular body and spaced plunger heads on the body in sealing contact with the cylinder and arranged on opposite sides of said port, said plunger body having a side inlet port between said plunger heads, sealing means on the flow tube forming aoseal with the plunger body beneath the inlet port thereof, a tubular sleeve valve arranged axially in the upper plunger head and whose lower end is closed, sealing means in said upper plunger head forming a seal with said sleeve valve, said sleeve valve having an opening and means to move the sleeve valve, as the plunger assembly reciprocates, to carry the valve opening beneath and above the valve seal whereby said sleeve valve will be closed upon downward movement of the plunger assembly and opened upon upward movement of the plunger assembly.

5. A deep well pump comprising a tubing, an outer cylinder on the lower end of the tubing having an inlet port, a standing valve assembly controlling the inlet of well liquid into the cylinder, a flow tube anchored in the cylinder, an upwar'dly opening valve controlling the flow of liquid upwardly from the cylinder, through said tube, a tubular plunger body forming an inner cylinder and reciprocable over said flow tube,

upper and lower plunger heads on the plunger body on opposite sides of said port andforming seals with the outer cylinder, sealing means on the tube forming a seal with said inner cylinder,

Asaid body having an inlet port above the ilow tube seal, a tubular sleeve valve arranged axially in,

and in sealed relation with, the plunger assembly and having a discharge port and means to move the sleeve valve, as the plunger assembly reciprocates, to carry the discharge port aboveand beneath the Valve seal whereby said discharge port will be closed and opened.

6. A deep well pump comprising a tubing, an outer cylinder on the vlower end of the tubing having an inlet port, a standing valve assembly l controlling the inlet of well liquid from the well beneath into the cylinder, a flow tube anchored in the cylinder, an upwardly opening valve controlling the ow of liquid upwardly through .the flow tube, a plunger assembly in the cylinder including a tubular body forming an inner cylinder and spaced plunger heads on the body in sealingv contact with the outer cylinder and arranged on opposite sides of said port, said inner cylinder having a side 'inlet port between said plunger heads, lower sealing means on the flow tube forming a seal with the wall of the inner cylinder beneath the inlet port thereof, a tubular sleeve valve arranged axially in the upper plunger head and whose lower end is closed, upper sealing means in said upper plunger head forming a seal plunger assembly and opened to said chamber upon upward movement of the plunger assembly.

7. A deep well pump comprising a tubing, an outer cylinder on the lower end of the tubing having an inlet port, a standing valve assembly controlling the inlet of well liquid from the well beneath into the. cylinder, a plunger assembly reciprocable in the cylinder including a tubular body forming an inner cylinder and spaced plunger heads on the body in sealing contact with the outer cylinder and arranged on opposite sides of said port, said inner cylinder having a side inlet port between said plunger heads, a ow tube in communication with the outer cylinder and extended into the inner cylinder, lower sealing means on the ilow tube forming a seal with the wall of the inner cylinder, a tubular sleeve valve arranged axially in the upper plunger head and whose lower end is closed, upper sealing means in said upper plunger head forming a seal with said sleeve valve, said upper and lower sealing means forming a pressure chamber in the inner cylinder having an inlet port and into which the ilow tube discharges, said sleeve valve having a discharge opening and means to move the sleeve valve, as the plunger assembly reciprocates, to carry the valve opening beneath and above the valve seal whereby said sleeve valve will be opened to said chamber upon upward movement of the plunger assembly.

8. A deep well pump comprising a tubing, an outer cylinder on the lower end of the tubing having an inlet port, a standing valve assembly controlling the inlet of well liquid from the well beneath into the cylinder, a plunger assembly reciprocacle in the cylinder including a tubular body forming an inner cylinder and spaced plunger heads on the body in sealing contact with the outer cylinder and arranged on opposite sides of said port, said inner cylinder having a side inlet port between said plunger heads, a flow tube in communication with the outer cylinder and extended into the inner cylinder, lower sealing means on the flow tube forming a seal with the wall of the inner cylinder, a tubular sleeve valve arranged axially in the upper plunger head and whose lower end is closed, upper sealing means in said upper plunger head forming a seal with said sleeve valve, said upper and lower seal-v ing means forming a pressure chamber in the inner cylinder having an inlet port and into which the iiow tube discharges, said sleeve Valve having a discharge opening and reasonable, interlocking means between the plunger assembly and sleeve valve to move the sleeve valve, as the plunger assembly reciprocates, to carry the valve opening beneath and above the valve seal whereby said sleeve valve will be opened to said chamber upon upward movement of the plunger assembly and closed to said chamber upon downward movement of the plunger assembly.

. AUGUST M. HAMER. 

